Gauging device



Dec. 17, 1929. E. w, CRI-:1.1. 1,739,711

. GAUGING DEVICE I Filed Apl`i112, 1926 l Patented Dec. 17, 1329l UNITED STATES EDWARD W. CRELL, 0F LOS ANGELES, CALIFORNIA, ASSIGNOR T0 UNION OlLCOIIPANY7 -PATNT OFFICE- OF CALIFORNIA, OF LOS ANGELES, CALIFORNIA, A CORPORATION OF CALIFORNIA -GAUGING DEVICE Application led April '12,

My invention relates to improvements in gauging devices whereby the volume of liquid in a tank, or container, under pressure may be easily determined within veryslight limits or error.

The principal object of my invention is to provide agauging device for determining the Y volumes of volatile lliquids, such as gasoline pressures for indicating the volume of liquidy ina container, no ymatter whether. the conouter .shell L an tainer be full or only partly illed,'and also for indicating when a certain volume of liquid has been placed in a conftainer on filling the same.

The ligure shows an assembly view, partly in section, showing the gauging device and means for introducing the same into thetank.

Another object ofmy invention is to providea gauging device which may also be used as`a sampling device.

Referrin to the drawing, it will be seen that a portlon of a tank car 1 is shown having an outer shell 2, an inner shell 3, and 'being suitably insulated therebetween at 4. A

standpi'pe 5 is welded in isuitable and gas tight relation 'between the inner .shell 3 andthe stan pipe 5 has' a quickv openingvalvet eade th'ereto.

The standpipe 5 and quickiopening valve'6 l'may' forma standard "permanent installation to be ailix'ed tothe dome of a tank car as V'illustrated or to any suitable portion of a stationary tank,` and the upper part of valve 6 is adapted to receive., when required for gauging, or sampling, a fitting/7 through the center of which is adapted to slide a gauging. pxipe `8, said 'pipe 8 being held in 1926. Serial No. 101,447.

substantially gas tight relation with --the fittinglg by packingmaterial 9\and packing nut Pipe 8 is preferably of small outside diami eter and has a small or capillary bore 11 passlng through its length, and pipe 8 is held in fitting 7 by a collar 12 whereby the upward motion of pipe 8 is limited. A faucet 13 is affixed to the .upper end of pipe 8 and an L 14 may be fastened to faucet 13, said L containing any of a number of well known devices,

such as reeds, etc., to form a Whistle.

The` operation of the device :is as follows:

If it be assumed that the tank car 1 is filled with a lvolatile liquid, such as casinghead 'gasoline or the like,`to the'level A'-A, a predetermined vapor pressure will exist interiorly of tank car 1 due to the valve 6 being tightly closed. The litting 7 containing the sliding gauge pipe 8 which is suitably calibrated on its exterior, is thereupon screwed into the upper part of valve 6 and faucet 13 and valve 6 areopened. A slight escape of thefvapors under .autogenous pressure will thereupon take place through the bore 11, thus causing the whistle in L 14 to sound, andpipe 8 is lowered untilits lowermost portion comes in Contact with the liquid at the level A-A whereupon the Whistling will cease and liquid will be forced through the bore A-A, faucet 13 and L 14$ As soon as the escape of this liquid is perceived, faucet 13 is closed and, inasmuch as pipe 8 is calibrated, the depth from theupper edge of nut 10 to the liquid level AA may be directly read fnom said calibration. .l v

Inasmuehas the interior capacity of tank carl is known to its full 'capacity up to the bot'tqrnedge of the innershell 3, and such capacities are already in tabular form, by

Fcomparing the reading obtained from said.

calibration with the` tables, the exact 'volume of containfd liquid to the level A-Awill thus be obtained' from the tables which may be` corrected, ina well known manner, yfor tem- `perature etc.

In this manner a very close gauging of liquids may be had because of the dilferential pressures utilizedinasmuch as the operation of my device is dependent solely upon a contact of the lower part of standpipe 8 with the surface of the liquid A--A` and requires substantiall no immersion for causing the flow of liqui through' the bore 11, due to said differential pressures.

It is of course obvious that my gauging device is applicable to tank cars, containers, etc., wherein a liquid to be gauged is nonvolatile by simply placing the interior of Aao such tank cars etc. under a pressure of an air pump or the like in a Well known manner and I do not limit myself to the application of my method by autogenous pressure -or to liquid being gauged but regard the functions of my device as being applicable to measuring any liquid under pressure.

In filling the 'tank car l with a predetermined volume of liquid, pipe 8 may be lowered vinto the tank a redetermineddistance so that when the iquid level A--A reaches the bottom of column 12 a redctermined volume will have been receive While such liquid is being introduced, the displacment of air in tank 'car 1 Will cause Whis tling as described and thereafter when the required volume has been produced liquid Wi l be forced out through L 14. f

If it is-required to sample the liquid in the containers, it is obvious thatliquid flowing through L14, as described, may be suitably trapped for that purpose.

I claim:

1. In combination, a tank, a liquid level gauge comprising a tube depending in said tank, the exposed end of said tube communicatiiig with the outside of said tank, and the other e'nd of said tube communicating with the inside of said tank'and adapted to make contact withthe surface of theliquid as the latter rises and falls, an audible signal device connected to the exposed end of said tube, said signal device adapted to indicate the flow l of va or through 4said tube, and also, to indicate t e discontinuance of said now of vapor. 2. In combination, a tank,'a liquid level gauge comprisin a tube depending in said falls, means forforming a gas ti ht'connec..

tion at the point of entry of sai tube, said means permitting sliding the tube through said connection, an audible signal device con, nected at this exposed end of said tube, said signal device adapted to indicate the flow` of vapor through said tube and, also, to indicate the discontinuance of said How of vapor.

4. 'In combination, a tank,` a liquid level gauge comprising a tube depending in said tank, the exposedjend of said tube communit eating with the outside of said tank, and the other end of\said tube communicating .withy the inside of said tankand adapted to niake contact with the surface of the liquid as the latter rises and falls, means of forming a gas tight connection at the point of entryof said tube rinto said tank, l'said meansfpermitting sliding the tube through said connectiomra signaling whistle attached to the exposed portion of said tube, 'said signal device adapted to be sounded by the flow of vapor through said tube and to discontinue 'the sounding when gas ceases to flow through said tube.'

Signed 'at Los Angeles, in thecounty' of" Los Angeles and State of California, this 7th day of April,

. p EDWARD W. CRELL.

tank, the expose end o f said tube being calibrated and communicating with the outside l l of said tank, and Vthe otherv end of said tube communicating with the inside of said tank and adapted to make contact with the surface tank, the exposed end of of the liquid as the latter rises and falls, a' signaling Whistle attached to the exposed portion of said tube, said signal device adapted to be sounded by the iiow of gas through said tube and to discontinue the ounding when gas ceases to flow through sai' tube.

3Q In combination, a tank, a liquid level comprising a tube depending inI said v i said tube being calibrated and communicating with'the outgauge side of saidtank, and the other end of said tube communicating ,with the inside of said tank and adapted to make contact with the surface of the liquid as the latter rises and loo 

